General Directions

Before starting to paint, carefully observe the following:


(A) Clean foreign materials on the surface such as dust and dirt. Scrape off loosely adheringold paint film and rust using a brush, broom, chisel, scraper, sandpaper, or other means ofremoval.

(B) Use power equipment or chemical means to remove tight and stubborn materials on thesurface like waxy materials, grease and gums, flakes, rust, and other contaminants that canprevent the good adhesion of the paint. Generally, thinner is used to remove oil and greasefrom surface.

(C) Where necessary, modify the surface chemically using the right primer to make thepainting surface receptive to succeeding coats.

(D) To improve adhesion, roughen the surface by sanding, sandblasting, or by any othermethod of abrading the surface.



  • SURFACE PREPARATION (PROFESSIONAL TREATMENT)


    The foundation to good painting practice of the entire paint system lies primarily on correctSurface Preparation. It is definitely the determining factor of any coating system to performand withstand the most demanding conditions. Poor preparation on the substrate wouldmean a premature failure, and under demanding conditions may result to big problems.
 


For maximum coatings performance, correct Surface Preparation is a must.It needs more time preparing the surface than in actual painting.


  • A. MASONRY


    Concrete, building block, stucco, brick and fiber cement board

    A-1 New Surface
    1. Concrete, building block and brick should be given a minimum of 30 days curing to reducewater and alkali to safe level.
    2. The surface must be dry and clean: Remove dirt, powder and loose mortar by wirebrushing and scraping.
    3. Cracks or breaks must be repaired.
    4. Excess alkalinity should be neutralized with Premium Welcoat Concrete NeutralizerPWCN-7250. Check neutrality by using universal pH paper. Allow surface to dry thoroughly.Dust off crystalline deposits if there are any.

    A-2 Old and Previously Painted Surface
    1. Remove all loose cement, dust, dirt, grease and/or peeling-off paint.
    2. Clean and sand old paint in good condition and dust off before repainting.
  • B. WOOD


    B-1 New Surface
    1. Sand the surface with coarse sandpaper followed by fine.
    2. The surface must be clean and dry for painting.
    3. Remove all sharp edges and seal pitch.

    B-2 Old and Previously Painted Surface (INTERIOR/EXTERIOR)
    1. Remove all loose and peeling-off paint. If severe peeling has occurred, remove all paintby using Octane Paint Remover (400-5230).

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